I took part in the in the sports meeting last week.
A. 800-meter-long
B. 800-meters-long
C. 800 meter long
D. 800 meters long
网友回答
(答案→)A. 800-meter-long
B. 800-meters-long
C. 800 meter long
D. 800 meters long
解析：考查复合形容词作定语的应用。题意为：上周我参加了运动会中的800米跑比赛。其构成结构为数词 +连字符号+名词单数+连字符号+形容词。故选A。